This is where your amp can run out of steam very quickly. According to Livewire, some spots are better than others for subwoofers depending on the room’s (or car’s) size and shape. Sunfire's Atmos subwoofer — a much smaller design that is far less efficient — has a 1,400-watt amp, yet averages only 108.4 dB SPL between 40 and 63 Hz. In the late 1970s, he became a contributing editor, columnist, and equipment reviewer at AudioScene Canada, the leading national consumer electronics magazine at the time. That’s it. Later on you can experiment with different settings if you want.). Experiments at  Axiom have shown that with the EP400/500/600 subs, it's advantageous to do so because of the brick-wall algorithms in the DSP circuits. Then, If you have a phase switch, switch it between 0 and 180 degrees and see if you hear a difference. I used 70 dB SPL at my listening seat and I found that I was setting the sub levels to +2 dB above 0 dB. Please enter your email address below to receive a password reset link. And how do you know you’ve found the right place? If you have an account, sign in with your email address. Fast forward to 2:53 in the video above to follow along—the rest is a showcase of a specific subwoofer. Since it had been some time since I tweaked my own subwoofer levels, I decided to explore the differences in settings using different test signals and sources. This is the frequency at which your subwoofer starts playing bass notes. We are here to help you make sure you are getting the product you need! Subwoofers are great at making music loud, but only to a certain point. The most accurate—for my particular room and listening tastes—turned out to be the Avia Guide to Home Theater. Check out the video to see Joe from Parts Express demonstrate the process and you’ll see how easy it is. Now pick a volume setting on your AV receiver that’s typical of the range you usually listen at. Then, turn the gain up until you can just start to hear it start to fill in the bass. All these sources use different combinations of either warble tones or pink noise, sometimes full-band or band-limited, which sequentially rotate through each of the speakers in your system and the subwoofer. JavaScript seems to be disabled in your browser. It's ok to boost the sub level a couple of dB if you want a bit more bass impact. The other test DVDs, while useful, just didn’t seem to be as accurate for my room and setup. Likewise, an average loud listening level of, say, 91 dB punctuated by a sudden peak of 10-20 dB will make a huge instantaneous demand on your amplifier. The level for each input to which an HDMI input jack is assigned can be set independently. You can find this in your speaker’s specs, or just slowly turn it up until it “rounds out” the sound on your speakers (so that your speakers and subwoofer aren’t both playing the same notes). Where to start? A RadioShack Sound Level Meter set to the “C” weighting scale and the “Slow” function, is essential. .). Chesky Records’ Ultimate DVD Surround Sampler & 5.1 Set-Up Disc had lots of interesting subwoofer test signals, and because it had DVD-Audio tracks, it was useful for calibrating speaker levels for DVD-Audio disc playback. Alan Lofft was, for 13 years, Editor in Chief of Sound & Vision, Canada's largest and most respected audio/video magazine. The trick is to set your subwoofer’s volume, and you can do it in just a few seconds. First, set the crossover. I’ve tried this on a number of different stereos and it’s worked like a charm. In my car, it's set to where the door panels start to vibrate, which is annoyingly below where the speakers really put out a good thump (when I'm listening to bass heavy music; I turn it down for recorded-in-their-kitchen-on-a-four-track punk rock). Of course, sometimes this is personal preference—maybe they just like big bass—but even as a basshead myself, I’ve learned that more is not always better, and the optimal level is probably lower than most people think. Hsu Research's VTF-15H subwoofer has a 350-watt amp and puts out an average of 123.2 dB SPL between 40 and 63 Hz. Our ears are quite insensitive to low bass compared to midrange frequencies, so depending on the level you initially set your AV receiver at and use to run the test tones, you may find that you are setting the subwoofer levels either too high or too low. Subwoofers are great at making music loud, but only to a certain point. Bookshelf Speakers, Cables &

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